A body of mass 2kg begins to slide down a plane inclined at an angle of 45° with the horizontal. The force of friction will be? a) 19.6sin 45° b) 9.8sin 45° c) 19.6cos 45° d) 9.8cos 45°
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A body of mass 2kg begins to slide down a plane inclined at an angle of 45° with the horizontal. The
a) 19.6sin 45°
b) 9.8sin 45°
c) 19.6cos 45°
d) 9.8cos 45°
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- A box with a mass of 0.5 slugs lies on an inclined plane making an angle of 30o with the horizontal. If the coefficient of kinetic friction between the box and the plane is 0.4, what is the magnitude of the force that must be applied parallel to the incline to keep the box moving down the incline at a constant speed?Calculate P required to move block A upward. Assume the coefficient of friction is 0.2 below block B. Neglect friction at all other contact surfaces. 30° P B 80 lb H₂ = 0.2 A 120 lbRedo Example 5, assuming that there is no upward lift on the plane generated by its wings. Without such lift, the guideline slopes downward due to the weight of the plane. For purposes of significant figures, use 2.91 kg for the mass of the plane, 12.2 m for the length of the guideline, and 18.2 and 36.4 m/s for the speeds. (a) Number (b) Number Units Units
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- A suspended mass of 20 grams located at 210° in the force table is the same as:This time we have a crate of mass 28.0 kg on an inclined surface, with a coefficient of kinetic friction 0.221. Instead of pushing on the crate, you let it slide down due to gravity. What must the angle of the incline be, in order for the crate to slide with an acceleration of 6.66 m/s^2? A) 27.0 degreesB) 75.6 degreesC) 40.5 degreesD) 54.0 degrees