Answer the questions. 1. Two objects of masses M and 2M are lying on equal area. Determine the ratio of pressure exerted by them on the ground. 2. Calculate the weight of the body whose mass is 30 kg. Take g =10 m/s square. 3. Give two examples each of situations in which you pull or push to change the state of motion of objects.
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Answer: 1- 1:2
2- 300 kg
3- a cricket ball hited by bat and golf ball hitted by the golf stick
Explanation:
1- the surface area is same but the mass or weight is in ratio of 1:2 so the ratio of the pressure on ground will be 1:2 as the pressure is directly proprtional to mass
2- weight of body = mass x g = 30x10 =300 N
3- when a cricket ball hit the bat there is change of state of motion and when the golf ball hit by the golf stivk the state of motion is changed from rest to motion
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