An electric motor exerts a force of 40 N...

An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts ) is

200

Text Solution

Verified by Experts

Topper's Solved these Questions

Work, Energy and power
SL ARORA|Exercise EXERCISE|415 Videos
Waves
SL ARORA|Exercise EXERCISE|558 Videos
WORK, POWER AND ENERGY
SL ARORA|Exercise Type F Based on Collisions|6 Videos

Similar Questions

Explore conceptually related problems

An electric motor creates a tension of 4500 newton in a hoisting cable and reels it at the rate of 2 m//s . What is the power of the motor ?

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.

An electric motor is designed to work at 100 V and draws a current of 6 A . The output power supplied by the motor is 150 W , and the remaining of the motor and its percentage efficiency?

A trolley is pushed along a road with a force of 400 N through a distance of 60 m in 1 minute. Calculate the power developed.

An electric motor exerts a constant torque 5Nm on a fly wheel by which it is rotated at the rate of 420 rpm The power of motor is

An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration of free fall is 10 m//s^(2) , the power in W developed by the motor in raising the load is :

An electric motor in a crane while lifting a load produces a tension of 4000 N in the cable attached to the load. If the motor is winding the cable at the rate of 3ms^(-1) , the power of the motor espressed in kilo watt units must be

(a) An electric motor runs on a d.c. source of emf e and internal resistance r. show that the power output of the source is maximum when the current drawns by the motor is epsilon//2r . (b) Show that power output of electric motor is maximum when the back emf is one-half the source emf provided the resistance of the windings of the motor is negligible. (c) Compare and contrast carefully the situation in this excercise with that in Example 43 above.

SL ARORA-Work, Energy and power-EXERCISE

When a spring a stretched through a distance x, it exerts a force give...
Text Solution
|
The SI unit of power is .
Text Solution
|
An electric motor exerts a force of 40 N on a cable and pulls it by a ...
Text Solution
|
A particle moves with a velocity (5hati-3hatj+6hatk) ms ^(-1) under t...
Text Solution
|
A car of mass 1000kg accelerates uniformly from rest to a velocity of ...
Text Solution
|
A constant force F is pushing a 5 kg mass on a horizontal surface at a...
Text Solution
|
A car of mass m is driven with acceleration a along a straight level r...
Text Solution
|
Power applied to a particle varices with time as P =(3t^(2)-2t + 1) wa...
Text Solution
|
An electric pump is used to fill an overhead tank of capacity 9m3 kept...
Text Solution
|
In an inelastic collision, what is conserved
Text Solution
|
A bullet is fired and gets embedded in a block kept on table. If table...
Text Solution
|
A particle of mass m1 moves with velocity v1 and collides with another...
Text Solution
|
A body of mass M(1) collides elastically with another mass M(2) at res...
Text Solution
|
A body of mass 5 kg moving with a velocity 10 m/s collides with anothe...
Text Solution
|
A body is moving with a velocity v , breaks up into two equal parts. O...
Text Solution
|
A bomb is kept stationary at a point. It suddenly explodes into two fr...
Text Solution
|
A particle of mass m having velocity v moving towards north collides w...
Text Solution
|
A mass3in,initially at rest at the origin, explodes into three fragmen...
Text Solution
|
A body of mass 4m at rest explodes into three pieces. Two of the piece...
Text Solution
|
A bullet hits and gets embedded in a solid block resting on a friction...
Text Solution
|