An object that weighs 1180 N rests on a lever at a point 0.390 m from a support. On the same side of the support, at a distance of 3.00 m from it, an upward force with magnitude F is applied. Ignore the weight of the board itself. If the system is in equilibrium, what is F? Express your answer in Newtons. where P = 1180 and x = 0.390.

A 14.0 m uniform ladder weighing 510 N rests against a frictionless wall. The ladder makes a 59.0°-angle with the horizontal. A. Find the horizontal and vertical forces (in N) the ground exerts on the base of the ladder when an 810-N firefighter has climbed 4.10 m along the ladder from the bottom. B. If the ladder is just on the verge of slipping when the firefighter is 9.40 m from the bottom, what is the coefficient of static friction between ladder and ground? C. If oil is spilled on the ground, causing the coefficient of static friction to drop to half the value found in part (b), what is the maximum distance (in m) the firefighter can climb along the ladder from the bottom before the ladder slips?

The flanged steel cantilever beam with riveted bracket is subjected to the couple and two forces shown, and their effect on the design of the attachment at A must be determined. Replace the two forces and couple by an equivalent couple M and resultant R at A. The couple is positive if counterclockwise, negative if clockwise. 2.20 KN 0.45 m 1.55 m 68° A Answers: M = i R = ( L. 620 N.m kN-m i+ i 1.02 KN 0.18 m 0.18 m j) kN

Directions: Assume, unless otherwise specified, that all numbers have at least 3 significant figures. F (N) Students collect data, see graph, for the force involved in stretching a rubber band. The data is well fit by the equation F = 33.65 x0.4971, 12 10 where F is in newtons and x is in meters. One end of the rubber band is attached to a stationary vertical rod and the other end to a 0.3 kg mass. The mass rests on a frictionless horizontal surface. The mass is pulled back such that the rubber band is stretched by 0.8 m from its unstretched length and then released from rest. 4. x (m) 0,1 0.02 0.04 0.06 0.08 A. What is the speed of the mass after it has traveled 0.4 m? B. What is the maximum speed of the object?

Reminders: Write out the equation you intend to use before substituting in it.

A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 550 N stands at the free end (Figure 1). The diving board is of uniform cross section and weighs 270 N. For related problemealing ting and strateginn Figure K-1.00 m- -2.00 m 1 of 1 ▼ Part A Find the magnitude of the force at the support point. Express your answer in newtons. VG ΑΣΦ Fsupport Submit Part B = Request Answer ? N

Hand written and clean answer

The flanged steel cantilever beam with riveted bracket is subjected to the couple and two forces shown, and their effect on the design of the attachment at A must be determined. Replace the two forces and couple by an equivalent couple M and resultant Rat A. The couple is positive if counterclockwise, negative if clockwise. 2.01 KN 0.49 m 1.52 m- 76⁰ A 6 Answers: M= kN.m R=( i i+ i L-- 500 N·m 10.17 m 0.17 m 1.05 KN j) kN

Please explain the answer to this question. The listed answers are options a & c

A 3.0-m -long ladder, as shown in (Figure 1), leans against a frictionless wall. The coefficient of static friction between the ladder and the floor is 0.50. Figure L=3.0 m 1 of 1 Part A What is the minimum angle the ladder can make with the floor without slipping? 0min = Submit VO ΑΣΦ Provide Feedback You have already submitted this answer. Enter a new answer. No credit lost. Try again. ? Previous Answers Request Answer O