A snow boarder slides down a steep slope at constant velocity. Draw a free body diagram for this snow boarder, including all forces that act on him.
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- A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as in Figure P4.68.(a) Construct free-body diagrams for each block. (b) Identify the horizontal force that causes the block of mass m to accelerate . (c) Assume that the upper block doesn not slip on the lower block , and find the acceleration of each block in terms of m and F.A composite object consists of 28 identical particles all accelerating at 185 m/s2. Calculate the acceleration of the composite object. Each particle requires force 21 Newtons. Calculate the total force required to accelerate the composite object (in Newtons)Imagine two blocks with mass m1 and m2 sitting right next to one another on a horizontal frictionless surface. A pushing force P is exerted on block m1. How much force does m1 exert on m2. Use appropriate free-body diagrams and Newton's 2nd law to calculate the magnitude of this force.
- A clarinetist, setting out for a performance, grabs his 3.490 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 39.37 N. Find the case's vertical acceleration. Indicate an upward acceleration as positive and a downward one as negative. Use for ?=9.810 m/s2g for the acceleration due to gravity. vertical acceleration:In Example 5.7, we pushed on two blocks on a table. Suppose three blocks are in contact with one another on a frictionless, horizontal surface as shown in the figure below. A horizontal force F is applied to m₁. Take m₁ = 2.00 kg, m₂ = 3.00 kg, m3 = 5.10 kg, and F = 16.0 N. (a) Draw a separate free-body diagram for each block. Choose File No file chosen This answer has not been graded yet. magnitude direction m₁ (b) Determine the acceleration of the blocks. m/s² m₂ m₂ |---Select--- ✓ (c) Find the resultant force on each block. block 1 N block 2 N block 3 N (d) Find the magnitudes of the contact forces between the blocks. between block 1 and 2 N N between block 2 and 3 Need Help? (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing "backing" by leaning against the wall with your back pushing on it. Every hammer blow makes your back sting. The supervisor helps you put a heavy…Two blocks, each of mass 1.72 kg, hang from the ceiling of an elevator which accelerates upward with an acceleration of 1.50 m/s2. (See the figure.) Find the tension, T2, in N.
- EXPLANATION MUST BE TYPED - CANNOT BE HAND-WRITTEN On vacation, your 1400-kg car pulls a 560-kg trailer away from a stoplight with an acceleration of 1.85 m/s2. (a) What is the net force exerted on the trailer? (b) What force does the trailer exert on the car? (c) What is the net force acting on the car?8. Consider the system shown in figure. Block A weighs 45.0 N and block B weighs 25.0 N. Once block B is set into downward motion, it descends at a constant speed. (a) Calculate the coefficient of kinetic friction between block A and the tabletop. (b) A cat, also of weight 45.0 N, falls asleep on top of block A. If block B is now set into downward motion, what is its acceleration (magnitude and direction)? O -2.13 m/s^2 -4.56 m/s^2 -6.78 m/s^2 O -8.45 m/s^2 O No Answer A FMake the free-body diagram of the following scenario (drawing): A 45 kg box is on the ground and is being pulled east by a rope at 32º from the horizontal. There is a friction between the two materials of µk = 0.2.