Recent content by nettie2311

Homework Statement A belt drive transmits 56kW from the driver pulley to the driven pulley. If 2.5kW is lost in belt friction, calculate: 1. kW's supplied by driver pulley 2. efficiency of the belt drive expressed as a percentage. Homework Equations %Efficiency = (power...

Hello, Thanks for the reply...I've tried calculating it and I'm pretty close but for some reason a few decimal places off. I'm guessing I need to convert cm squared to metre squared? And MPa to Pa? I'm getting all confused.

Homework Statement Hello, I have been given the question: What is the factor of safety of a steel hanger having an ultimate strength of 560MPa and supporting a load of 71000N. The steel hanger in question has a cross sectional area of 5 cm squared. If anyone can help me set up the...

Homework Statement Hello, I've been given a question: The ultimate strength of a round steel rod is 560MPa. If a factor of safety is 6 is required, what is the maximum permissible load for the rod if it has a diameter of 6.9cm? If anyone can explain how to set up this...

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

Homework Statement A plane is flying at 56 km/h at a bearing of 65 degrees. After flying for 3 hours the plane heading is changed to a bearing of 90 degrees. After flying for a further 1 hour at 56 km/h what is the plane's bearing from its original position? No clue how to answer...

Homework Statement What is the magnitude of the resultant of the following vectors? 5N, East 8N, 30 degrees West of North 2N, East 7.5N, 23.5 degrees West of South Is there a way to solve this using a calculator? Any help would be great.

Homework Statement Find the magnitude and direction of 4 concurrent coplanar forces: 10N 32 degrees east of north 35N 50 degrees east of north 25N 72 degrees east of north 85N 40 degrees east of south Any help would be greatly appreciated.

Homework Statement Find the magnitude of the resultant of the following series of vectors. 120N, North 190N, 60 degrees East of North 70N, 10 degrees East of South 150N, 45 degrees South of West I have similar questions like these and not sure how to answer them, if anyone can help...

Homework Statement Find the magnitude and direction of 3 coplanar forces of: 40N 45 degrees east of south 10N west 70N 35 degrees east of north This is all new to me so anyone that can show me and hopefully explain how I can get the answer would be great.