The Drawing Shows A Crate That Is Initially At Rest On A Floor The Coefficient Of Static Friction Between The Crate And 1 (39.71 KiB) Viewed 32 times
The Drawing Shows A Crate That Is Initially At Rest On A Floor The Coefficient Of Static Friction Between The Crate And 2 (39.71 KiB) Viewed 32 times
The drawing shows a crate that is initially at rest on a floor. The coefficient of static friction between the crate and the floor is, 0.500 and the coefficient of kinetic friction between the crate and the floor is 0.450. (a) As shown in Fig. 1.1, if a force with F-82.0 N is applied to the crate and the crate is at the verge of motion, (a) what is the mass of the crate? (b) If the magnitude of in Fig. 1.1 is decreased to 65.0 N, what is the magnitude of the frictional force on the crate? if two forces, and are applied on the crate and the magnitude of F, is 20.0 N. (c) what is the magnitude of F for the crate to be at the verge of motion of the F₁ magnitudes of F, and F₂ in Fig. 1.2 are 20.0 N and 79.0 N, respectively. (d) what is the acceleration of the crate? (e) As shown in Fig 1.3, if two forces F, and F2 applied on the crate are parallel to the ground and the crate starts to move, what are the magnitude and direction of the acceleration of the crate. (Note: Fig. 1.3 is a top view of the crate.) Fig. 1.1 F 20.0⁰ P₁ 20.0° Fig. 1.2 F₂ 20.0" 1₂1-79.0 N 55.0" 1₁1-20.0 N Fig. 1.3: top view of the crate and the forces
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