Question

A mass of 1000 kg is raised through a height of 10 m in 20 s. What is (a) the work done and (b) the power developed?

Answer 1

Answer:

b the power developed?

Explanation:

tish is because

Answer 2

Given: m= 1000kg, h= 10 m, t= 20s.

To find: work done(w), power (p)

Solution: Using g= 9.8m/s as the gravitational constant

Work done (w) = mgh

a) w= 1000×9.8×10

w= 98000 Joule

b) power(p) = work done/ time

p= w/t

p= 98000/20

p= 4900watt

Therefore work done= 98,000 Joule and power= 4900watt.