Find the normal force exerted on the crate by the elevator

Reference no: EM1361893

Q. A pair of eyeglass frames is made of epoxy plastic. At room temperature (20.0°C), the frames have circular lens holes 2.30 cm in radius. To what temperature must the frames be heated if lenses 2.33 cm in radius are to be inserted in them? The average coefficient of linear expansion for epoxy is 1.3 10-4 (°C)-1.

Q. A 140 kg crate is in an elevator traveling downward and slowing down at 1 m/s2. Find the normal force exerted on the crate by the elevator.

Reference no: EM1361893

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