a block sliding in a horizontal groove is Subjected to a vertical downwards force at 1,800N as shown in the diagram below. if the coefficient of friction for the contact surfaces to cause motion if the force is applied in a direction parallel to the groove. Find the force
A. Applied in a direction parallel to the groove
B. Upward at 30° to the groove
C. Downwards at 30° to the groove
![a block sliding in a horizontal groove is Subjected to a vertical downwards force at 1800N as shown in the diagram below if the coefficient of friction for the class=](https://us-static.z-dn.net/files/dfe/033f1b480b0a9eea9ec2ad4813460a2c.jpg)