In the figure, a uniform plank, with a length L of 5.23 m and a weight...

In the figure, a uniform plank, with a length L of 5.23 m and a weight of 280 N, rests on the ground and against a frictionless roller at the top of a wall of height h = 1.59 m. The plank remains in equilibrium for any value of θ = 70.0° or more, but slips if θ < 70.0°. Find the coefficient of static friction between the plank and the ground.

Expert Solution

genius_generous answered 7 months ago

A uniform plank of mass M and length L leans against a vertical wall. The initial...

A uniform plank of mass M and length L leans against a vertical wall. The initial angle it makes with the horizontal ground is 60º. It is let go from rest and slides down frictionlessly. The moment it leaves contact with the wall, what angle does it make with the ground? There is no friction anywhere.

In the figure, a 53.3 kg uniform square sign, of edge length L = 1.67 m,...

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1. A rod of uniform density and weight W=120N has length L=1.00 m and is supported...

1. A rod of uniform density and weight W=120N has length L=1.00 m and is supported at two points, under the 10 cm point and under the 70 cm point. The support at 10 cm exerts a force NL on the rod and the support at 70 cm exerts a force NR on the rod, both forces being in the vertical direction. (a) Use the conditions of static equilibrium to find the values of NL and NR. (b) In order...

The figure is an overhead view of a thin uniform rod of length 0.467 m and...

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In the figure, a thin horizontal bar AB of negligible weight and length L = 3.2...

In the figure, a thin horizontal bar AB of negligible weight and length L = 3.2 m is hinged to a vertical wall at A and supported at B by a thin wire BC that makes an angle θ = 40° with the horizontal. A block of weight W = 140 N can be moved anywhere along the bar; its position is defined by the distance x = 2.07 m from the wall to its center of mass. Find (a)...

A plank of length l = 2m is hinged at one end to a wall. The...

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A uniform stationary ladder of length L = 4.2 m and mass M = 19 kg...

A uniform stationary ladder of length L = 4.2 m and mass M = 19 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.38. The ladder makes an angle θ = 53° with respect to the floor. A painter of mass 8M stands on the ladder a distance d from its base. a. Find the magnitude of the normal...

Problem 21: A uniform stationary ladder of length L = 3.7 m and mass M =...

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The thin uniform rod in the figure has length 5.0 m and can pivot about a...

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A uniform stick, mass m and length l, is placed in a horizontal plane by hanging it from a massless string attached to the center. A ball of mass M moving with speed V in the plane of the stick. The ball strikes the stick at a distance d from the center. the collision is elastic. Find the resulting translational and rotational speeds of the stick and the resulting speed of the ball. show that the relative speed of the...

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