Consider the force P = 75N and Q = 125 N. Calculate the Resultant force using: a. Parallelogram method D. Component method

Item 3 Hide Timer 01: 3 of 2 You are pushing an 80.0 N wheelbarrow as shown in (Figure 1). You lift upward on the handle of the wheelbarrow so that the only point of contact between the wheelbarrow and the ground is at the front wheel. Assume the distances are as shown in the figure, where 0.50 m is the horizontal distance from the center of the wheel to the center of gravity of the wheelbarrow. The center gravity of the dirt in the wheelbarrow is assumed to also be a horizontal distance of 0.50 m from the center of the wheel. Suppose that the maximum total upward force that you can apply to the wheelbarrow handles is 75 lb. Cons Part A If you apply this estimated force, what is the maximum weight of dirt that you can carry in the wheelbarrow? Express your answer in pounds. w = 6.42 lb Submit Previous Answers Completed Part B If the dirt has the weight you calculated in part A, what upward force does the ground apply to the wheel of the wheelbarrow? Figure Provide Feedback DII 888 19…

If an object is in equilibriuim, the net torque about any arbitrary axis must be zero. A. True B. False

The fishing pole in the figure below makes an angle of 20.0° with the horizontal. What is the magnitude of the torque exerted by the fish about an axis perpendicular to the page and passing through the angler's hand if the fish pulls on the fishing line with a force F = 125 N at an angle 37.0° below the horizontal? The force is applied at à point L = 1.92 m from the angler's hands. N.m -I 20.0° 37.0 1 20.0° F

Part A Calculate the net torque about point O for the two forces applied as in the figure (Figure 1). The rod and both forces are in the plane of the page. Take positive torques to be counterciockwise. ■响 AL中 1 ? 28 -K T = N.m Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback Next > Figure <- 1 of 1 F2 = 12.0 N F = 8.00 N 30.0° 不2.00 m*ー3.00 m 业 MacBook Air 80 000 000 II DD F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 24 & %23

3.) A cube of brass has sides of 0.12 m. a. Draw the situation. b. Determine the applied tangential force to displace the top of the block 1.2 x 10-5 m given that Sbrass = 3.5 x 101⁰ N/m².

A. Three identical coins, labeled A, B, and C in the figure, lie on three corners of a square 10.0 cm on a side. Determine the x coordinate of each coin, xA, xB, and xC B. Determine the y coordinate of each coin described in Part A: yA, yB, and yC. C. Determine the x and y coordinates xcg and ycg of the center of gravity of the three coins described in Part A.

3. Consider two thin-walled beams of the same wall thickness with cross- sections as shown in Figure 2. Applied torque is the same for both beams. Beams are twisted such that twisting angles are equal to each other. Find the relation between R2 and R₁ for the case = π/3. What will be this relation if we double the center angle o? R₁ R₁ R₂ FIGURE 2. Cross-sections of two thin-walled beams.