A block of mass m, = 1.55 kg and a block of mass m, = 5.65 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. The shaped ramp makes an angle of 8 = 30.0° as shown in the figure. The coefficient of kinetic friction is 0.360 for both blocks. М. R (a) Draw force diagrams of both blocks and of the pulley. Choose File No file chosen (b) Determine the acceleration of the two blocks. (Enter the magnitude of the acceleration.) ]m/s2 (c) Determine the tensions in the string on both sides of the pulley. left of the pulley N right of the pulley N

Two blocks of mass m 10 kg and mg 5 kg are connected by a massless string that passes over a pulley as shown in the figure. The system is in static equilibrium. There is friction between m and the inclined surface (4=0.4). Neglect the friction between the string and the pulley. Determine the static friction force in the system. 10 kg 5.0 kg 37 49 0 N 29.3 N 39.2 N 33.9 N 9.98 N

An Atwood machine consists of a pair of masses attached to each other by a cord that passes over a pulley.  Assume the pulley and the cord are ideal.  If m1= 100 g and m2 = 0.15 kg, then what is the tension in the cord and what is the acceleration of the blocks (include the acceleration's direction)?

An object of mass m is constrained to move on a horizontal frictionless circular track of radius m starts fIrom rest at time t = 0 and thereafter is puushed by an external force with constant magnitude F, always horizontal and tangent to the track. The horizontal component of the force exerted by the track on the object is given by А. О В. F C. Ft/mR D. Ft2/mR E. F/mg ans: D

When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force g' n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F = n = 780 N. (For 0, enter the smaller of the two possible values between 0° and 90°.) -Achilles tendon Tibia 15.0° 18.0 cm 25.0 cm b T = R =

Two blocks of mass m, = 10 kg and mg =5 kg are connected by a massless string that passes over a pulley as MA shown in the figure. The system is in static equilibrium. There is friction between m, and the inclined surface (30.4). Neglect the friction between the string and the pulley. Determine the static friction force in the system. 10 kg 5.0 kg 37 49.0 N 29.3 N 39.2 N 33.9 N O 9.98 N

The Special Olympics raises money through “plane pull” events in which teams of 25 people compete to see who can pull a 74,000 kg airplane 3.7 m across the tarmac. The inertia of the plane is an issue—but so is the 14,000 N rolling friction force that works against the teams. If a team pulls with a constant force and moves the plane 3.7 m in 6.1 s (an excellent time), what fraction of the team’s work goes to kinetic energy and what fraction goes to thermal energy?

The tension is growing!Context At your summer job, your supervisor wants to test your physics skills. A new winch (a cable driven by a motor) is to be used to hoist loads up an inclined ramp. Your supervisor is worried about the packages arriving too quickly at the top of the ramp. Constraints The inclined ramp is made up of small cylinders that are free to rotate: there is no friction between the ramp and the load.The angle theta of the ramp from the horizontal is known.The winch cable exerts a known force.The cable is oriented at an angle a from the horizontal.The charge, initially immobile, has a known mass.The length of the ramp is known. Schematization Draw a diagram of the object that interests us. Draw your x and y axes. Draw and name each force experienced by the object that interests us. Modelization Build a model to calculate the final speed of the load as it arrives at the top of the ramp, given the known parameters. Then test your model with the following values: Ramp…

The distance between two telephone poles is d = 54.0 m. When a 1.20 kg bird lands on the telephone wire midway between the poles, the wire sags h = 0.206 m.   How much tension (in N) does the bird produce in the wire? Ignore the weight of the wire

16.0 kg and m₂ (a) Objects with masses m₁ 9.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m₂ falls 1.00 m in 1.46 s, determine the coefficient of kinetic friction between m₁ and the table. m₁ = m₂ = (b) What If? What would the minimum value of the coefficient of static friction need to be for the system not to move when released from rest?