What is the work to be done to increase the velocity of a car from 30 km h−1 to 60 km h−1? If the mass of the car is 1500 kg?
What is the amount of work to be done on a car of mass 1000kg to increase its velocity from 10km/hr to 20km/hr?
What is the work to be done to increase the velocity of a car from 30 km per hour to 60 km per hour if the mass of the car is 1500 kg?
Solve:
(1) Ajit carries a load of 17 kg from the ground on his head and takes it to the height of 2 m from the ground. Calculate the work done by him. (333.2 J)
(2) The velocity of a car increases from 54 km/hr to 72 km/hr. If the mass of the car is 1500 kg find the work done to increase the velocity. (131250 J)