Question

the amount of work done by one in lifting a 10000kg car is estimated to be 3mj. to what height is the car lifted (g=10m/s)

Answer 1

Answer:

Here, m=100 kg,

h=10 m,

t=20 s

g=10 ms

−2

The power of the crane is'

P=

t

mgt

​

=

(20s)

(100kg)(10 ms

−2

)(10m)

​

=500 W.