Home
Class 11
PHYSICS
A force F is applied to a system of ligh...

A force `F` is applied to a system of light pulleys to pull body `A`. If `F` is `10 kN` and block of mass `A` has a mass of `5xx10^(3)kg`, what is the speed of `A` after `1 s` starting from rest? Assume no friction.

A

(a)`4ms^(-1)`

B

(b)`8ms^(-1)`

C

(c)`6ms^(-1)`

D

(d)none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Net force on A

`F_A=4(F/2)=2F=2xx10=20kN`
`"Acceleration" a=F_A/m=(20xx10^3)/(5xx10^3)=4m//s^2`
`v=u+at=0+4xx1=4m//s`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS VOLUME 2

    CENGAGE PHYSICS ENGLISH|Exercise MCQ_TYPE|20 Videos

  • MISCELLANEOUS VOLUME 2

    CENGAGE PHYSICS ENGLISH|Exercise LC_TYPE|34 Videos

  • MISCELLANEOUS KINEMATICS

    CENGAGE PHYSICS ENGLISH|Exercise Interger type|3 Videos

  • NEWTON'S LAWS OF MOTION 1

    CENGAGE PHYSICS ENGLISH|Exercise Integer|5 Videos

Similar Questions

Explore conceptually related problems

A force of 10 N acts on a body of mass 0.5 kg for 0.25s starting from rest.What is its momentum now?

A force F= 2t^2 is applied to the cart of mass 10 Kg, initially at rest. The speed of the cart at t = 5 s is -

A force vector applied on a mass is represented as F = 6i - 8j + 10k and acceleration with 1 m//s^(2) . What will be the mass of the body ?

A 30kg block rests on a rough horizontal surface A force of 200N is applied on the block The block acquires a speed of 4m//s starting from rest in 2s What is the value of coefficient of friction ? .

A ship of mass 3xx10^7kg initially at rest, is pulled by a force of 5xx10^5N through a distance of 3m. Assuming that the resistance due to water is negligible, the speed of the ship is

The block of mass m is being pulled by a horizontal force F=2 mg applied to a string as shown in figure (Take g=10(m)/(s^2) ). The pulley is massless and is fixed at the edge of an immovable table. What is the value of force exerted by the supporting table on the pulley (in Newton)

The block of mass m is being pulled by a horizontal force F=2 mg applied to a string as shown in figure (Take g=10(m)/(s^2) ). The pulley is massless and is fixed at the edge of an immovable table. What is the value of force exerted by the supporting table on the pulley (in Newton)

A cubical block of side 1 m and mass 1 kg is pulled by a force F applied to central line so that it slides with an acceleration of 1m//s^(2) . What is the net torque on it about O. (in N-m).

Consider the situatioin shown in figure. The system is released from rest and the block of mass 1.0 kg is found to have a speed 0.3 m/s ater it has descended thrugh a distance of 1 m. find the coefficient of kinetic friction between the block and the table.

A block B is pulled by a force of 18 N applied to a light pulley as shown in the figure. If the coefficient of friction is 0.4 and the acceleration of the block is 0.5 ms^(-2) , the mass of the block is (g = 10 m//s^2)