The 5-kg block B will move a distance of 0.5 meters up along the smooth inclined plane in t =3 seconds when block A is released from rest. Note that the angle of inclination of the plane is 75 degrees. Determine: [Select] (a) The acceleration of
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- If the rocket sled starts with onlyone rocket burning, what is the magnitude of its acceleration?Assume that the mass of the system is 2100 kg, the thrust Tis 2.4×104 N, and the force of friction opposing the motionis known to be 650 N. (b) Why is the acceleration not onefourth of what it is with all rockets burning?A 6.7 kg mass is released from rets while on an incline of 53.96 degrees. If the coefficient of kinetic friction is 0.478 what is the magnitude of the acceleration of the mass?What horizontal forcemust be applied to a largeblock of mass M shown inFigure P4.85 so that theblocks remain stationaryrelative to M? Assume allsurfaces and the pulley arefrictionless. Notice that theforce exerted by the string accelerates m2.
- An inclined plane makes an angle of 30o with the horizontal. Neglecting friction forces, find the constant force, applied parallel to the plane, required to cause a 15-kg box to speed up, moving up the plane with acceleration 1.2 m/s2 and down the incline with acceleration 1.2 m /s2?A dated box of dates, of mass 5.00 kg, is sent sliding up a frictionless ramp at an angle of to the horizontal as a function of time t, the component vx of the box’s velocity along an x axis that extends directly up the ramp.What is the magnitude of the normal force on the box from the ramp?The 300-N block in the figure is at rest on the roughhorizontal plane before the force P is applied at t=0.The magnitude of P is 80t N, where t is the time inseconds, and its direction is constant. The coefficientsof static and kinetic friction are Ms = 0.40 and Mk0.20, respectively. Which of the following most nearlygives the time when the block starts to slide? Which of the following most nearly gives the value of× if the power developed by the force at a giveninstant is 0.20 hp?
- A 9.08 kg mass is released from rest while on and incline of 58.65 degrees. If the coefficient of kinetic friction is 0.301, what is the magnitude of the acceleration of the mass?Crates A and B have equal mass. Crate A is at rest on an incline that makes and angle of theta = 22.22 degrees horizontal, while crate B is at rest on a horizontal surface. Write an expression for the ratio fo the normal forces, A to B in terms of theta?Suppose the tension in both of the cables is measured to be 50 N and that the angle thateach cable makes with the horizontal is known to be 30 degrees. What is the weight of thesign?
- Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of the blocks, as shown. The coefficient of kinetic friction between the blocks and the surface is 0.25. If each block has an acceleration of 2.0 m/s2to the right, what is the magnitude F of the applied force?a block of mass "m" slides down an incline, which makes an angle of 30 degrees with horizontal. if the acceleration of the block is 3.3 m/s^2, then find the coefficient of kinetic frictionIn a television commercial, a small, spherical bead of mass 4.00 g is released from rest at t=0in a bottle of liquid shampoo. The terminal speed is observed to be 2.00 cm/s. Find (a) the value of the constant bin the equation v=mgb(1ebt/m), and (b) the value of the resistive force when the bead reaches terminal speed.