Complete Question
The complete question is shown on the first uploaded image
Answer:
a
![F = 20 \ kg](https://img.qammunity.org/2021/formulas/physics/college/regr9p6z8gsr7n0pcnx1qfkohhhy9nnoae.png)
b
![F = 18 \ kg](https://img.qammunity.org/2021/formulas/physics/college/3jyjbpdd4gcrk0liguxa2bao3r5coi1001.png)
c
![F = 10 \ kg](https://img.qammunity.org/2021/formulas/physics/college/sfn9huups0r33769z4zv5zpwhofjb1w5cp.png)
Step-by-step explanation:
From the diagram we are told that
The first mass is
![m_1 = 10 \ kg](https://img.qammunity.org/2021/formulas/physics/college/jziya5d1q3no1af17ua9gvv2zl96holxrz.png)
The second mass is
![m_2 = 3 \ kg](https://img.qammunity.org/2021/formulas/physics/college/lsspwlafzii2ajtda9eoxnbmhr4e4ybz3g.png)
The third mass is
![m_3 = 5 \ kg](https://img.qammunity.org/2021/formulas/physics/college/ou9azgesse2cc7svsm5i5sicdwquo0i4ha.png)
The fourth mass is
![m_4 = 2 \ kg](https://img.qammunity.org/2021/formulas/physics/college/308ky1j9lgkpq1ueyc1ag1jpy2htmsr86c.png)
Gnerally the total mass accelerated by right force is mathematically evaluated as
![F = m_1 + m_2 +m_3 + m_4](https://img.qammunity.org/2021/formulas/physics/college/9cd0z7c5nz7lw5undk5bf9l4u0dq67486i.png)
![F = 10 + 3 +5 + 2](https://img.qammunity.org/2021/formulas/physics/college/472u4v2pghfc6pf55ddpyy4uy3c5i0sxbu.png)
![F = 20 \ kg](https://img.qammunity.org/2021/formulas/physics/college/regr9p6z8gsr7n0pcnx1qfkohhhy9nnoae.png)
Gnerally the total mass accelerated by cord 3 is mathematically evaluated as
![F = m_1 + m_2 +m_3](https://img.qammunity.org/2021/formulas/physics/college/8w7eqxw4czpxoqy7b1hp8qepza3j8enfjl.png)
![F = 10 + 3 +5](https://img.qammunity.org/2021/formulas/physics/college/iyee4lrkkzuu998b1p7h571xm7o5ypo2a4.png)
![F = 18 \ kg](https://img.qammunity.org/2021/formulas/physics/college/3jyjbpdd4gcrk0liguxa2bao3r5coi1001.png)
Gnerally the total mass accelerated by cord 3 is mathematically evaluated as
![F = m_1](https://img.qammunity.org/2021/formulas/physics/college/377bcssn95yc5vrvz4qro7k99be1vddhlj.png)
![F = 10 \ kg](https://img.qammunity.org/2021/formulas/physics/college/sfn9huups0r33769z4zv5zpwhofjb1w5cp.png)