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 to apply the torque condition you needed to choose an axis about which to calculate the torques. Try choosing a different axis--do you get the same results for NL and NR?

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

A horizontal insulating rod, of length L, has a uniform charge density of theta on its...

A horizontal insulating rod, of length L, has a uniform charge density of theta on its right half and of negative theta on its left half. Find the net force on a test charge of magnitude q placed to the right of the rod, on the axis of the rod, a distance x from the center of the rod (where x > L=2).

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.

One end of a uniform ℓ = 4.40-m-long rod of weight w issupported by a...

One end of a uniform ℓ = 4.40-m-long rod of weight w is supported by a cable at an angle ofθ = 37°with the rod. The other end rests against a wall, where it is held by friction (see figure). The coefficient of static friction between the wall and the rod isμs = 0.595.Determine the minimum distance x from point Aat which an additional weight w (the same as the weight of the rod) can be hung without causing the...

QUESTION 1: A thin uniform rod has a length of 0.400 m and is rotating in...

QUESTION 1: A thin uniform rod has a length of 0.400 m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. The rod has an angular velocity of 0.35 rad/s and a moment of inertia about the axis of 2.90×10−3 kg⋅m2 . A bug initially standing on the rod at the axis of rotation decides to crawl out to the other...

A uniform horizontal 50.0 kg beam of length l= 3.50 m is at rest, supported by...

A uniform horizontal 50.0 kg beam of length l= 3.50 m is at rest, supported by a vertical rope located d =0.850 m from its left end . The right end of the beam is supported by a column which exerts an upward force on the beam a) Draw an exteded force diagram of the beam b) solve for (i) the magnitude of the tension in the rope and (ii) the force that the column exerts on the beam.

Given is the rod of length L with the linear charge of density ?=?/? . The...

Given is the rod of length L with the linear charge of density ?=?/? . The rod lies on the x axis with its midpoint at the origin. Find the electric field vector on y axis resulting from such continuous system of charge at distance y from the origin. Use this result to obtain the expression for electric field at distance y from the infinitely long wire.

A diving board of length 3.00 m is supported at a point 1.00 m from the...

A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 520 N stands at the free end. The diving board is of uniform cross section and weighs 295 N. 1) Find the magnitude of the force at the support point. 2) Find the direction of the force at the support point. (upward or downward) 3) Find the magnitude of the force at the left-hand end. 4) Find the direction...

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

The thin uniform rod in the figure has length 5.0 m and can pivot about a horizontal, frictionless pin through one end. It is released from rest at angle θ = 50° above the horizontal. Use the principle of conservation of energy to determine the angular speed of the rod as it passes through the horizontal position. Assume free-fall acceleration to be equal to 9.83 m/s2.

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

The figure is an overhead view of a thin uniform rod of length 0.467 m and mass M rotating horizontally at angular speed 15.7 rad/s about an axis through its center. A particle of mass M/3 initially attached to one end is ejected from the rod and travels along a path that is perpendicular to the rod at the instant of ejection. If the particle's speed vp is 3.32 m/s greater than the speed of the rod end just after...

A diving board of length 3.00 m is supported at a point 1.00 m from the end

A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 480 N stands at the free end (Figure 1) The diving board is of uniform cross section and weighs 300 N. Find the magnitude of the force at the support point. Find the direction of the force at the support point. Find the magnitude of the force at the left-hand end. Find the direction of the force at the left-hand...

Subjects