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secondary 4 | Physics
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fred low
Fred Low

secondary 4 chevron_right Physics chevron_right Singapore

which of these answer is the correct one.. 1st, 2nd, 3rd or 4th

Date Posted: 5 years ago
Views: 503
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Learningtutor
Learningtutor
5 years ago
Ans: -810,121.5

Minus sign to represent opposite direction of force exerted on plank.

Take hinge to be the pivot. Assume weightless plank.

Use kinetic coeff. for a moving object.