A sphere of massm 6 kg is attached to a central force Fof magnitude (80/) N directed toward O. The sphere may slide without friction on the horizontal surface and in the position shown its velocity va has a magnitude of 16 m/s. 05 m Determine the maximum and minimum distances from the sphere to the origin O. (You must provide an answer before moving to the next part.) The maximum distance from the sphere to the origin O is avO m. The minimum distance from the sphere to the origin Ois OOe m.

The 150-lb man lies against the cushion for which the coefficient of static friction is u, = 0.5. He rotates about the z axis with a constant speed v = 32 ft/s. (Figure 1) Figure 1 of 1 ft

OA balanced net force must be applied. OAn unbalanced net force must be applied. O The net force must be zero. O The net force must be greater than the applied force. Question 3(Multiple Choice Worth (01.03 LC) For an object at rest, the normal force equals the gravitational force. What is the sum of these forces called? O Net force OUnbalanced force O Inertia O Potential force Question 4Multiple Choice (01.03 LC) What kind of motion will an object have when forces on it are balanced? OIt will not move at all. Previous Question Question 1 (Answered) 吕口 F3 F1 O00 DOD F4 F2

Under the action of force P, the constant acceleration of block B is 6.4 ft/sec² up the incline. For the instant when the velocity of B is 2.6 ft/sec up the incline, determine the velocity of B relative to A (positive if up the slope, negative if down), the acceleration of B relative to A (positive if up the slope, negative if down), and the absolute velocity of point C (positive if up the slope, negative if down) of the cable. Answers: VB/A = AB/A Vc = = 15° i i B ft/sec ft/sec² ft/sec

The forces acting onan object weighingW units on aninclined planepositioned at anangle of θ with thehorizontal (see figure)are modeled byμW cos θ = W sin θ,where μ is the coefficient of friction. Solve theequation for μ and simplify the result.