Physics, asked by Icloud7852, 1 year ago


Two bodies A and B of mass 5 kg and 10 kg in
contact with each other rest on a table against a
rigid wall. The coefficient of friction between the
bodies and the table is 0.2, when the force of 200
N is applied horizontally on A. Which of the
following is correct?
200 N
1)the reaction of the wall is 200N
2)the action reaction force between A and B is more than reaction of wall
3)the action reaction force between A and B is less than reaction of wall
4.)both 1 and 3​

Answers

Answered by Kenblock43
19

Answer:

a) Mass of body A, mA = 5 kg

Mass of body B, mB = 10 kg

Applied force, F = 200 N

Coefficient of friction, μs = 0.15

The force of friction is given by the relation:

fs = μ (mA + mB)g

= 0.15 (5 + 10) × 10

= 1.5 × 15 = 22.5 N leftward

Net force acting on the partition = 200 – 22.5 = 177.5 N rightward

Hence, the reaction of the partition will be 177.5 N, in the leftward direction.

(b) Force of friction on mass A:

fA = μmAg

= 0.15 × 5 × 10 = 7.5 N leftward

Net force exerted by mass A on mass B = 200 – 7.5 = 192.5 N rightward

Net force acting on the moving system = 177.5

Net force causing mass A to move:

FA = mAa

= 5 × 11.83 = 59.15 N

Net force exerted by mass A on mass B = 192.5 – 59.15 = 133.35 N

Explanation:

Please mark this answer as Brilliant

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