Please show all work and explain. Thanks :) A 6.00-kg block is in contact with a

Question

Please show all work and explain. Thanks :)

A 6.00-kg block is in contact with a 4.00-kg block on a frictionless surface as shown in Fig. 4-12. 6) _ The 6.00-kg block is being pushed by a 20.0-N force toward the 4.00-kg block. What is the magnitude of the force of the 6.00-kg block on the 4.00-kg block? A) 10.0 N B) 6.00 N C) 4.00N D) 8.00N E) 12.0N A traffic light of weight 100 N is supported by two ropes as shown in Fig. 4 -13. What are the 7) _ tensions in the ropes? A) 50 N B) 56N C) 83N D) 63N E) 66N

Explanation / Answer

6. Result : (D) 8 N is the correct option

Explanation :

Two blocks are accelerating as a group , hence

F = ma

a = F/m = 20 N/ (6+4) = 2 m/s2

Now considering individual force

F1 + F2= F

Force of 6 kg block on 4 kg block

F2= 4 kg × 2 m/s2= 8N

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