Home
Class 11
PHYSICS
A body of mass m resting on a smooth hor...

A body of mass m resting on a smooth horizontal plane starts moving under a constant force F. During its rectilinear motion, the angle `theta` between the direction of force and horizontal plane varies as 8 = kx , where k is a constant and x is the distance travelled by the body from the initial position. What is the velocity of the body?

A

`(2F)/m tan theta`

B

`sqrt((2Fsin theta)/(mK)`

C

`sqrt((Fcos theta)/(mk))`

D

`sqrt((2Fcos theta)/(mk)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II (LECTURE SHEET (ADVANCED)) (More than one correct answer Type Questions )|2 Videos

  • NEWTONS LAWS OF MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II (LECTURE SHEET (ADVANCED)) (Linked Comprehension Type Questions)|2 Videos

  • NEWTONS LAWS OF MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN)) (Straight Objective Type Questions)|26 Videos

  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise Questions for Descriptive Answers|7 Videos

  • OSCILLATION

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|12 Videos

Similar Questions

Explore conceptually related problems

At the moment t = 0 , the force F = kt is applied to a small body of mass 'm' resting on a smoth horizontal plane. (K is a positive constant ). The direction of the force an angle theta with the horizontal always as shown The distance travelled x by the body along horizontal before it leaves contact with the horizontal at t =t_0 can be expressed in relation with time 't' as

A body is sliding down a rough inclined plane of angle of inclination theta for which the coefficient of friction varies with distance x as mu (x) = kx, where k is a constant. Here x is the distance moved by the body down the plane. The net force on the body will be zero at a distance x_(0) given by :

At the moment t = 0 , the force F = kt is applied to a small body of mass 'm' resting on a smoth horizontal plane. (K is a positive constant ). The direction of the force an angle theta with the horizontal always as shown Consider the body to leave the surface at an instant t=t_0 then which of the following curves represent velocity ''V'' Vs time 't' for the motion of the body in the interval 0 lt t lt t_0

A bar of mass m resting on a smooth horizontal plane starts moving due to force |F| =(mg)/9 . The magnitude of force remains constant with time. The force vector makes an angle theta with the horizontal which varies with the distance covered as theta =Cx . if the constant , C=10 (("degree")/("meter")) , then the speed of the bar , when theta becomes equal to 30^@ for the first time is, (Take , g =10 m//s^2 )

At the moment t = 0, the foce F = kt is applied to a small body of mass 'm' resting on a smooth horizontal plane, (K is a positive constant ) . The direction of the force forms an angle theta with the horizontal always as shown which of the option (s) is /are correct ?