The figure shows a horizontal force vecF...

The figure shows a horizontal force `vecF` acting on a block of mass M on an inclined plane (angle `theta`). What is the normal reaction N on the block?

`mg sin theta+Fcos theta`

`mg sin theta- Fcos theta`

`mg cos theta-Fsin theta`

`mg cos theta+Fsin theta`

Text Solution

Verified by Experts

The correct Answer is:

From the figure, the normal reaction on the block is `N=mg cos theta+f sin theta`.

Topper's Solved these Questions

NEWTONS LAWS OF MOTION
ALLEN|Exercise EXERCISE-II|112 Videos
NEWTONS LAWS OF MOTION
ALLEN|Exercise EXERCISE-III|28 Videos
NEWTONS LAWS OF MOTION
ALLEN|Exercise SWOE|44 Videos
NEWTON'S LAWS OF MOTION & FRICTION
ALLEN|Exercise EXERCISE (JA)|4 Videos
RACE
ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos

Similar Questions

Explore conceptually related problems

A horizontal force acting on a block of mass m which is placed on an inclined plane (as shown in the figure). What is the normal reaction N on the block?

A horizontal force F acts on the block of mass m and the block remains stationary, thr value of friction force is.

A block is stationary on a rough inclined plane. How many forces are acting on the block?

A block of mass m is moving down with constant velocity along an inclined plane of inclination theta . What is the work done by external force in pulling the block along the inclined plane through a height h with constant velocity?

A block of mass m is placed on a rough inclined plane. The corfficient of friction between the block and the plane is mu and the inclination of the plane is theta .Initially theta=0 and the block will remain stationary on the plane. Now the inclination theta is gradually increased . The block presses theinclined plane with a force mgcostheta . So welding strength between the block and inclined is mumgcostheta , and the pulling forces is mgsintheta . As soon as the pulling force is greater than the welding strength, the welding breaks and the blocks starts sliding, the angle theta for which the block start sliding is called angle of repose (lamda) . During the contact, two contact forces are acting between the block and the inclined plane. The pressing reaction (Normal reaction) and the shear reaction (frictional force). The net contact force will be resultant of both. Answer the following questions based on above comprehension: Q. If mu=(3)/(4) then what will be frictional force (shear force) acting between the block and inclined plane when theta=30^@ :

A block of mass m is placed on a rough inclined plane. The corfficient of friction between the block and the plane is mu and the inclination of the plane is theta .Initially theta=0 and the block will remain stationary on the plane. Now the inclination theta is gradually increased . The block presses theinclined plane with a force mgcostheta . So welding strength between the block and inclined is mumgcostheta , and the pulling forces is mgsintheta . As soon as the pulling force is greater than the welding strength, the welding breaks and the blocks starts sliding, the angle theta for which the block start sliding is called angle of repose (lamda) . During the contact, two contact forces are acting between the block and the inclined plane. The pressing reaction (Normal reaction) and the shear reaction (frictional force). The net contact force will be resultant of both. Answer the following questions based on above comprehension: Q. For what value of theta will the block slide on the inclined plane:

A block rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between the block and inclined plane is 0.8. If the frictional force on the block is 10 N, the mass of the block is

A block of mass m lying on a rough horizontal plance is acted upon by a horizontal force P and another force Q inclined at an angle theta to the vertical. The block will remain in equilibrium, if the coefficient of friction between it and the surface is

A block of mass m is placed on a rough inclined plane. The corfficient of friction between the block and the plane is mu and the inclination of the plane is theta .Initially theta=0 and the block will remain stationary on the plane. Now the inclination theta is gradually increased . The block presses theinclined plane with a force mgcostheta . So welding strength between the block and inclined is mumgcostheta , and the pulling forces is mgsintheta . As soon as the pulling force is greater than the welding strength, the welding breaks and the blocks starts sliding, the angle theta for which the block start sliding is called angle of repose (lamda) . During the contact, two contact forces are acting between the block and the inclined plane. The pressing reaction (Normal reaction) and the shear reaction (frictional force). The net contact force will be resultant of both. Answer the following questions based on above comprehension: Q. If the entire system, were accelerated upward with acceleration a the angle of repose, would:

ALLEN-NEWTONS LAWS OF MOTION-EXERCISE-I

The ratio of gravitational mass to inertial mass is equal to:
Text Solution
|
A given object takes n times as much time to slide down a 45^(@) rough...
Text Solution
|
The figure shows a horizontal force vecF acting on a block of mass M o...
Text Solution
|
A 150 g tenins ball coming at a speed of 40m/s is hit straight back by...
Text Solution
|
Three solids of masses m(1),m(2) and m(3) are connected with weightles...
Text Solution
|
Two blocks of masses M(1)=4 kg and M(2)=6kg are connected by a string ...
Text Solution
|
Three masses M(1), M(2) and M(3) are lying on a frictionless table. Th...
Text Solution
|
In Newton's second vecF=mveca (for constant mass m), veca is the accel...
Text Solution
|
A man of mass 90kg is standing in an elevator whose cable broke sudden...
Text Solution
|
A body, under the action of a force vec(F)=6hati -8hatj+10hatk , acqui...
Text Solution
|
Two bodies A and B of masses 10kg and 15kg respectively kept on a smoo...
Text Solution
|
Ten one-rupee coins are put on top of each other on a table, Each coin...
Text Solution
|
A block of mass m is in contact with the cart C as shown in The coeffi...
Text Solution
|
A gramphone record is revolving with an angular velocity omega. A coin...
Text Solution
|
A man, of mass 60kg, is riding in a lift. The weights of the man, when...
Text Solution
|
A person of mass 940 kg and presses the button on control panel. Then ...
Text Solution
|
A body mass M hits normally a rigid wall with velocity v and bounces b...
Text Solution
|
Three blocks of masses m, 3m and 5m are connected by massless strings ...
Text Solution
|
A particle of mass m rests on a horizontal floor with which it has a c...
Text Solution
|
A car of mass 1000kg negotiates a banked curve of radius 90m on a fict...
Text Solution
|