# Decision D12-12 (Figure D12.1 condition 2 C.Marg 1989)

Affiliates: 0,03 \$how to earn
Sold: 0
Content: d12-12_1989.rar 29,8 kB
Loyalty discount! If the total amount of your purchases from the seller Михаил_Перович more than:
 200 \$ the discount is 15% show all discounts 1 \$ the discount is 1%

## Seller

Михаил_Перович information about the seller and his items

Seller will give you a gift certificate in the amount of 3 RUB for a positive review of the product purchased.

## Product description

Decision D12-12 (Figure D12.1 condition 2 C.Marg 1989)

The mechanism located in the vertical plane (Fig. D12.0 - D12.9) consists of stepped wheels 1 and 2 with radii R1 = 0.4 m, r1 = 0.2 m, R2 = 0.5 m, r2 = 0.3 m, having fixed axis of rotation; a homogeneous rod 3 of length l = 1.2 m, fixed by a hinge at one of the ends; cargo 4 and 5, suspended to the threads wound on the wheels. On the rod, the distance AB = 2l / 3. The rod 3 is connected to the wheel 2 by a weightless rod 6. The wheels 1 and 2 are either meshed (Figure 0-4), or connected by a weightless rod 7 (Figure 5-9). The springs are attached to the wheels and the rod 3. In Table. D12 are the masses mi of bodies (kg) and the stiffness coefficients ci of the springs (N / m). The dashes in the columns of the table mean that the corresponding bodies or springs do not enter the system (in the drawing, these bodies and springs are not represented); as a result, in each specific variant, a fairly simple mechanism is obtained, containing three or even two bodies. Rod 6 or 7 is part of the mechanism, when it includes both bodies connected by this rod. In the positions depicted in the figures, the mechanism is in equilibrium. Determine the frequency and period of small oscillations of the system near the equilibrium position. Find also what is the static elongation (compression) of the spring λst in the equilibrium position. When counting, consider wheels 1 and 2 as solid, uniform cylinders of radii R1 and R2, respectively. Let us consider two examples of solving this problem.

## Feedback

0
No feedback yet.
Seller will give you a gift certificate in the amount of 3 RUB for a positive review of the product purchased..
In order to counter copyright infringement and property rights, we ask you to immediately inform us at support@plati.market the fact of such violations and to provide us with reliable information confirming your copyrights or rights of ownership. Email must contain your contact information (name, phone number, etc.)