Home
Class 11
PHYSICS
The 50 N collar starts from rest at A an...

The `50 N` collar starts from rest at `A` and is lifted with a constant speed of `0.6 m//s` along the smooth rod. Determine the power developed by the force `F` at the instant shown.
.

Text Solution

Verified by Experts

Since the collar is lifted with a constant speed
`T cos theta - mg = 0 rArr T cos theta = mg = 5 xx 10`
Now, `P = vec F. vec v = T cos theta xx v` , Here `T = F`
`P = 50 xx v = 50 xx 0.6 = 30 W`.
Promotional Banner

Topper's Solved these Questions

  • WORK POWER AND ENERGY

    NARAYNA|Exercise C.U.Q-Key|75 Videos

  • WORK POWER AND ENERGY

    NARAYNA|Exercise Level- I (C.W)|60 Videos

  • WORK , ENERGY & POWER

    NARAYNA|Exercise EXERCISE IV|43 Videos

Similar Questions

Explore conceptually related problems

A 400kg car attains a speed of 50m/s from rest in 20s. The power developed in the engine will be

The jet plane starts from rest at s =0 and is subjected to the acceleration shown. Determine the speed of the plane when it has travelled 60 m.

A man exerts a force of 200N in pulling a cart at a constant speed of 16m//s Calculate the power spent by the man.

A train starts from rest at S = 0 and is subjected to an acceleration as shown in figure. Then,

A particle of mass 2kg starts to move at position x=0 and time t=0 under the action of force F=(10+4x)N along the x- axis on a frictionless horizontal track . Find the power delivered by the force in watts at the instant the particle has moved by distance 5m .