Question

a) a girl applies a force of 50 Newton, in pushing a table such that work done by her is 26 Joule. calculate the the displacement produced in the table. b) An energy of 4 kilojoule causes movement of a body through 64 m in the direction of force, Calculate the force acting on the body.​

Answer 1

Answer:

the answer is 144

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Answer 2

Explanation:

$\tt Question\:A \\ \\ \tt Force\: (F) = 50 \:N \\ \tt Work\:done\:(W) = 26 \:Joule \\ \\ \tt We\:know\:that \\ \\ \tt W = F.s \\ \\ \tt s =\frac{W}{F} \\ \\ \tt s = \frac{26}{50} \\ \\ \tt s = 0.52 \: m \\ \\ \tt s = 52 \:cm \\ \\ \boxed{\bold{\red{\underline{\tt The\: displacement\: produced\:in\:table\:is\:52\:cm }}}} \\ \\ \tt Question\:B \\ \\ \tt Work\:done\:(W) = 4\: kiloJoule = 4000 \:Joule\\ \tt Displacement\:(s) = 64\:m \\ \\ \tt We\:know\:that \\ \\ \tt W = F.s \\ \\ \tt F = \frac{W}{s} \\ \\ \tt F = \frac{4000}{64} \\ \\ \tt F = 62.5 \:N \\ \\ \boxed{\bold{\red{\underline{\tt Force\:acting\:on\:body\:is\:62.5\:N}}}}$