Question

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Example 1: Calculate the work done to
take an object of mass 20 kg to a height of
10 m.
(g = 9.8 m/s)​

Answer 1

Answer:

Explanation:

F = m × g

   = 20 × 10

   =200 N

we know that

W= force × displacement

= 200 × 10

= 2000 j

hope helps u.....

Answer 2

Answer:

Work is - 1960 J.

Step-by-step explanation:

m = 20 kg

s = 10 m

g = 9.8 m/s²

F = m g

=> F = 20 * (-9.8)

=> F = - 196 N

W = F * s

=> W = (-196) * 10

=> W = - 1960 J

Here, negative sign is because direction of force and direction of displacement are opposite. So work is negative.