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Problem 12.217 Problem 12.217 The crate C is being lifted by moving the roller at A downward with a constant speed of $v_A = 2 \text{ m/s}$ along the guide. When the roller is at B, the crate rests on the ground. Neglect the size of the pulley in the calculation. Hint Relate the coordinates $x_C$ and $x_A$ using the problem geometry, then take the first and second time derivatives. (Figure 1) Figure 1 of 1 Part A Determine the magnitude of the velocity of the crate at the instant $s = 1 \text{ m}$. Express your answer to three significant figures and include the appropriate units. $v_C =$ Value Units Submit My Answers Give Up Part B Determine the magnitude of the acceleration of the crate at the instant $s = 1 \text{ m}$. Express your answer to three significant figures and include the appropriate units. $a_C =$ Value Units Submit My Answers Give Up

          Problem 12.217
Problem 12.217
The crate C is being lifted by moving the roller at A
downward with a constant speed of $v_A = 2 \text{ m/s}$ along
the guide. When the roller is at B, the crate rests on
the ground. Neglect the size of the pulley in the
calculation. Hint Relate the coordinates $x_C$ and $x_A$
using the problem geometry, then take the first and
second time derivatives.
(Figure 1)
Figure 1
of 1
Part A
Determine the magnitude of the velocity of the crate at the instant $s = 1 \text{ m}$.
Express your answer to three significant figures and include the appropriate units.
$v_C =$
Value
Units
Submit
My Answers Give Up
Part B
Determine the magnitude of the acceleration of the crate at the instant $s = 1 \text{ m}$.
Express your answer to three significant figures and include the appropriate units.
$a_C =$
Value
Units
Submit
My Answers Give Up

Problem 12.217
Problem 12.217
The crate C is being lifted by moving the roller at A
downward with a constant speed of vA = 2 m/s along
the guide. When the roller is at B, the crate rests on
the ground. Neglect the size of the pulley in the
calculation. Hint Relate the coordinates xC and xA
using the problem geometry, then take the first and
second time derivatives.
(Figure 1)
Figure 1
of 1
Part A
Determine the magnitude of the velocity of the crate at the instant s = 1 m.
Express your answer to three significant figures and include the appropriate units.
vC =
Value
Units
Submit
My Answers Give Up
Part B
Determine the magnitude of the acceleration of the crate at the instant s = 1 m.
Express your answer to three significant figures and include the appropriate units.
aC =
Value
Units
Submit
My Answers Give Up

Added by Leonard S.

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