6. Figure represents the total acceleration of a particle moving clockwise in
a circle of radius
2.50 m at a certain instant of time. At this instant, find
(a) the radial acceleration,
(b) the speed of the particle, and
(c) its tangential acceleration.
7. A simple pendulum has a mass of 0.250 kg and a length of 1.00 m. It is
displaced through an
angle of 15.0 and then released. What are
(a) the maximum speed,
(b) the maximum angular acceleration, and
(c) the maximum restoring force?
9.A 12.0-g wad of sticky clay is thrown horizontally at a 100-g wooden block
initially at rest on
a horizontal surface. The clay sticks to the block. After impact, the block
slides 7.50 m before
coming to rest. If the coefficient of friction between the block and the
surface is 0.650, what
was the speed of the clay immediately before impact?
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