A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. At point A the speed of the car is 10.0 m/s, and at point B, the speed is 10.5 m/s. Assume the child is not holding on and does not wear a seat belt. (a) What is the force of the car seat on the child at point A? (b) What is the force of the car seat on the child at point B? (c) What minimum speed is required to keep the child in his seat at point A?
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3. ਸਿੱਧਾ ਬੋਡੀ ਪੋਜ਼ ਕਿ ਦਿਖਾਉਂਦਾ ਹੈ ? *
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