Question

A 100 kg bag of wheat is placed on a plank of wood what is the weight of the bag and what is the reaction force exerted by the plank​

Answer 1

Weight=mass*gravitational acceleration

Weight=100*9.8

=980N

Newton's third law says that the action and reaction force are equal. Hence the reaction force exerted by the plank is also 980N

Answer 2

Answer:

980N

Explanation:

Given:

Weight of bag (m) = 100kg

Acceleration due to gravity (a) = 9.8 m/s^2

To find :

Force (f) = ?

Solution :

f = ma......................(Newton's second law of motion)

f = 100 × 9.8

f = 980N

Therefore, the force exerted by the plank is 980N .