Block a of mass 4 kg is to be kept at re...

Block a of mass 4 kg is to be kept at rest against a smooth vertical wall by applying a force F as shown in figure. The force required is :- `(g=10m//s^(2))`

735 N

1050 N

1470 N

1200 N

Text Solution

Verified by Experts

Topper's Solved these Questions

Laws of Motion
SL ARORA|Exercise Exercise|627 Videos
Kinetic Theory of gases
SL ARORA|Exercise Example|47 Videos
LAWS OF MOTION : FRICTION
SL ARORA|Exercise Self Practice|95 Videos

Similar Questions

Explore conceptually related problems

A block of mass 10 kg is held at rest against a rough vertical wall [mu=0.5] under the action a force F as shown in figure. The minimum value of F required for it is (g=10m//s^(2))

A block of mass 'm' is held stationary against a rough wall by applying a force F as shown. Which one of the following statement is incorrect ?

A rectangular block of mass 6 kg is to be held against a rough vertical wall by appplying a force perpendicular to the wall. What is the minimum force to be applied, if the coefficient of friction is 0.42?

A cubical block of side 'a' is held at rest, against a rough vertical wall by applying a force F acting along the centre. The mass of the block is m . Taking acceleration due to gravity as 'g' , determine (i) The minimum coefficient of friction between the block and wall (ii) The torque by normal reaction about the centre of mass

A rectangular block of mass 2 kg is to be held against a rough vertical wall by applying a force of 98 N perpendicular to the wall. What is the coefficients of friction if the applied force is the minimum required force?

Two blocks A and B of masses 2 kg and 8 kg respectively are kept in contact and pressed against a roguh vertical wall by applying a horizontal force F = 50 N as shown, The frictional force acting between the two blocks is

A block of mass 2kg is held at rest against a rough vertical wall by passing a horizontal (normal) force of 45 N . Coefficient of friction between wall and the block is equal to 0.5. Now a horizontal force of 15 N (tangential to wall) is also applied on the block. Then the block will :

A block of mass 10kg is moving up on an inclined plane with constant acceleration 2 ms^(-2) by applying a constant force F as shown in the figure. (take, g = 10 ms^(-2) ). If the work done on the block by applied force F in 2s is 120x N Joule then the value of N is?

A block of mass 4 kg is pressed againest the wall by a force of 80N as shown in figure Determine the value of the friction force and block's acceleration (Take mu_(s) = 0.2 , mu_(s) = 0.15)

A block of mass m is at rest under the action of force F against a wall as shown in figure. Which of the following statement is incorrect?

SL ARORA-Laws of Motion-Exercise

Consider the system as shown in the figure. The pulley and the string ...
Text Solution
|
A horizontal force acting on a block of mass m which is placed on an i...
Text Solution
|
Block a of mass 4 kg is to be kept at rest against a smooth vertical w...
Text Solution
|
Consider three cases, same spring is attached with 2kg , 3kg and 1kg b...
Text Solution
|
A rocket moves forward by pushing the surrounding air backwards.
Text Solution
|
Assertion: Frictional forces are conservative forces. Reason: Potent...
Text Solution
|
Assertion: The driver in a vechicle moving with a constant speed on a ...
Text Solution
|
Assertion: A man in a dosed cabin falling freely does not experience g...
Text Solution
|
Assertion : It is difficult to move a cylce along the roda with its...
Text Solution
|
Assertion: On a rainy day, it is difficult to drive a car or bus at h...
Text Solution
|
Assertion : Use of ball beaings between two moving parts of a machine ...
Text Solution
|
Assertion: Centripetal acceleration is always direction towards the ce...
Text Solution
|
Assertion : The apparent weight of a body in an elevator moving with...
Text Solution
|
Assertion : Impulsive force is large are acts for a short time. Rea...
Text Solution
|
Assertion : A horse has to pull a cart harder during the first few ste...
Text Solution
|
Assertion:A table cloth can be pulled from a table without dislodging ...
Text Solution
|
Assertion : A body can be at rest even when it is under the action of ...
Text Solution
|
Assertion: The centripetal forces and centrifugal forces never cancel ...
Text Solution
|
Assertion: A quick collision between two bodies is more violent that s...
Text Solution
|
Assertion : Thrust on a rocket depends only on velocity of exhaust gas...
Text Solution
|