The masses of $$10$$ kg and $$20$$ kg respectively are connected by a massless spring in fig. (4). A force $$of200$$ newton acts on the $$20$$ kg mass. At the instant shown, the $$10$$ kg mass has acceleration $$12$$ $$m/sec2$$. What is the acceleration of $$20$$ kg mass ?

Question

Infinity Learn · Accepted Answer

Force on $$10$$ kg mass $$=$$ $$10$$ x $$1.2$$ $$=$$ $$120$$ NThe mass of $$10$$ kg will pull the mass of $$20$$ kg in the backward direction with a force of $$120$$ N.∴Net force on mass $$20$$ kg $$=$$ $$200$$ $$-$$ $$120$$ $$=$$ $$80$$ NIts acceleration $$=80N20kg=4m/s2$$

The masses of 10 kg and 20 kg respectively are connected by a massless spring in fig. (4). A force of
200 newton acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12 m/sec². What is the acceleration of 20 kg mass ?

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The masses of 10 kg and 20 kg respectively are connected by a massless spring in fig. (4). A force of200 newton acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12 m/sec2. What is the acceleration of 20 kg mass ?

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Ready to Test Your Skills?

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The masses of 10 kg and 20 kg respectively are connected by a massless spring in fig. (4). A force of
200 newton acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12 m/sec². What is the acceleration of 20 kg mass ?